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| 隔音物 | |||
| 音障 | |||
| 隔声屏障 | |||
| 隔音板 | |||
| 隔声墙 | |||
| 声障; 声垒 | |||
| 隔声装置; 声屏障 | |||
| 跨声速声障; 隔声板; 声〔音〕障 | |||
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| 声屏障 | |||
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sound barrier : 12 phrases in 1 subject |
| Rail transport | 12 |
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